133168755 has 16 divisors (see below), whose sum is σ = 213215904. Its totient is φ = 70974720.

The previous prime is 133168751. The next prime is 133168757. The reversal of 133168755 is 557861331.

It is a happy number.

It is not a de Polignac number, because 133168755 - 2² = 133168751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133168751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34797 + ... + 38433.

It is an arithmetic number, because the mean of its divisors is an integer number (13325994).

Almost surely, 2^133168755 is an apocalyptic number.

133168755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133168755 is a deficient number, since it is larger than the sum of its proper divisors (80047149).

133168755 is a wasteful number, since it uses less digits than its factorization.

133168755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6086.

The product of its digits is 75600, while the sum is 39.

The square root of 133168755 is about 11539.8767324439. The cubic root of 133168755 is about 510.6626718365.

The spelling of 133168755 in words is "one hundred thirty-three million, one hundred sixty-eight thousand, seven hundred fifty-five".